Shimano Dura Ace SS 7600 Track Cog (Black) (Single Speed) (3 32") (15T Shimano Dura Ace Ultegra CS R9200 R8100 16T Cog Sprocke Shimano Dura Ace 1 8" Track Cog dantratis 15T Velonova Yahoo! SHIMANO DURA ACE NJS TRACK COG 16T. Experience the precision and performance of the Shimano Dura Ace Track Cog, designed for serious cyclists who demand the best. This premium cog combines durability with sleek aesthetics, making it an essential addition to your bike. Tooth Count: 16T for optimal gear ratios. Width: 1 8" for compatibility with various setups. Color: Elegant black finish for a modern look. Crafted for track cycling, ensuring reliable performance. Lightweight design to enhance your cycling experience. How to use Ideal for: This track cog is ideal for competitive cyclists looking to enhance their bike's drivetrain. Simply install it on your rear hub to enjoy smooth and efficient gear transitions during your rides. Details: The Shimano Dura Ace Track Cog measures 1. 37" x 24 tpi and features a robust construction that withstands the rigors of track cycling.